US2637635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supplementary fuel
Assignee: California Research LLC
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Filing: 1949-06-09
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Granted: 1953-05-05
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Expires: 1969-06-09
Abstract
No abstract record available.
Inventors
- 👤 Edward J Mclaughlin
- 👤 Jr George H Denison
- 👤 Maurice R Barusch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:35
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/02; C10L1/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A SUPPLEMENTARY SPARK-IGNITION ENGINE FUEL COMPRISING A MAJOR PROPORTION OF A WATER-ALCOHOL MIXTURE AND AT LEAST ABOUT THREE PER CENT BY VOLUME TO AN AMOUNT LIMITED BY THE SOLUBILITY IN SAID ALCOHOL-WATER MIXTURE OF PHENYLENE DIAMINES HAVING NO NITROGEN-BONDED SUBSTITUENTS OTHER THAN METHYL GROUPS AND NOT MORE THAN TWO OF SAID METHYL GROUPS AND HAVING NO CARBONBONDED SUBSTITUENTS OTHER THAN HYDROCARBON GROUPS CONTAINING FEWER THAN FIVE CARBON ATOMS AND WHEREIN THE WATER AND ALCOHOL ARE PRESENT IN THE WATER-ALCOHOL MIXTURE IN THE PROPORTION OF FROM ABOUT 5 TO ABOUT 90 PER CENT BY VOLUME OF WATER AND FROM ABOUT 10 TO ABOUT 95 PER CENT BY VOLUME OF ALCOHOL.
Claim 2
Dependent Claim
109 words
A SUPPLEMENTARY SPARK-IGNITION ENGINE FUEL COMPRISING A MAJOR PROPORTION OF A WATER-ALCOHOL MIXTURE AND AT LEAST ABOUT THREE PER CENT BY VOLUME TO AN AMOUNT LIMITED BY THE SOLUBILITY IN SAID ALCOHOL-WATER MIXTURE OF PHENYLENE DIAMINES HAVING NO NITROGEN-BONDED SUBSTITUENTS OTHER THAN METHYL GROUPS AND NOT MORE THAN TWO OF SAID METHYL GROUPS AND HAVING NO CARBONBONDED SUBSTITUENTS OTHER THAN HYDROCARBON GROUPS CONTAINING FEWER THAN FIVE CARBON ATOMS AND WHEREIN THE WATER AND ALCOHOL ARE PRESENT IN THE WATER-ALCOHOL MIXTURE IN THE PROPORTION OF FROM ABOUT 5 TO ABOUT 90 PER CENT BY VOLUME OF WATER AND FROM ABOUT 10 TO ABOUT 95 PER CENT BY VOLUME OF ALCOHOL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |